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High-contrast Imaging Study on the Candidate Companions Around the Star AH Lep

Authors :
Wolfgang Brandner
Valentina D'Orazi
Thomas Henning
R. Gratton
Gael Chauvin
Markus Feldt
Arthur Vigan
Matthias Samland
Maud Langlois
Joshua E. Schlieder
Miriam Keppler
Anne-Lise Maire
Dino Mesa
Faustine Cantalloube
Silvano Desidera
Samantha B. Brown Sevilla
A. Boccaletti
T. Schmidt
A. M. Lagrange
Michael Meyer
Mickael Bonnefoy
Source :
Research Notes of the American Astronomical Society
Publication Year :
2019

Abstract

AH Lep (R.A._(J2000) = 05 34 09.16, decl._(J2000) = −15 17 03.18) is a young, nearby, solar-type star (G2V). Gaia DR2 and BANYAN Sigma provide a 99.9% probability of the star belonging to the Columba moving group (Zuckerman et al. 2011), yielding an estimated age of 42^(+6)_(-4) Myr (Bell et al. 2015). It has a parallax of p = 17.26 mas, corresponding to a distance of d = 57.9 pc (Gaia Collaboration et al. 2018). The star has been reported to have variable photospheric and X-ray emission (e.g., Burleigh et al. 1998; Cutispoto et al. 2003).

Details

Database :
OpenAIRE
Journal :
Research Notes of the American Astronomical Society
Accession number :
edsair.doi.dedup.....5b6011ccf23471b5c6a7005cf640e23a